package jiali.netty;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
import io.netty.handler.stream.ChunkedWriteHandler;

public class IMServer {

    public static void start(){
        EventLoopGroup boss = new NioEventLoopGroup();
        EventLoopGroup worker = new NioEventLoopGroup();

        //绑定端口
        ServerBootstrap bootstrap = new ServerBootstrap();

        bootstrap.group(boss, worker)
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel socketChannel) throws Exception {
                        ChannelPipeline pipeline = socketChannel.pipeline();
                        //添加http编码解码器
                        pipeline.addLast(new HttpServerCodec())
                                //支持大数据流
                                .addLast(new ChunkedWriteHandler())
                                //对http消息做聚合操作. FullHttpRequest, FullHttpResponse
                                .addLast(new HttpObjectAggregator(1024 * 64))
                                .addLast(new WebSocketServerProtocolHandler("/"))
                                .addLast(new WebSocketHandler());
                        //自定义handler
                        pipeline.addLast(new ChannelInboundHandlerAdapter(){
                            @Override
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                System.out.println(msg);
                            }
                        });
                    }
                });

        ChannelFuture future = bootstrap.bind(8080);
    }
}
